Supplier Representative

Supplier Representatives consult the delivery team or the Senior User(s) on the technical aspects.

The following responsibilities are mentioned in the official manual:

providing technical guidance

communicating technical standards

highlighting any areas that the project may impact from a technical perspective

Note: this role is only explained briefly in the roles and responsibilities appendix of the official manual, isolated from the rest of the manual: it doesn't exist in the responsibilities tables, and there's not many mentions in the rest of the text.